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JSON Schema Repair & Validation for Agent Outputs
x402
JSON Schema Repair & Validation for Agent Outputs is a paid API for AI agents from agent.kihustle.tech, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Deterministically repairs malformed JSON from agent tool outputs and optionally validates the result against a provided JSON Schema.
Price / call$0.01
Success—
StatusUnknown
How this service works
Deterministic JSON repair for agent tool outputs, with optional JSON Schema validation. Built for tight agent loops at micropayment prices.
Output
Returns a repaired, valid JSON object along with metadata about what was fixed. If a JSON Schema was provided, also returns validation results indicating whether the repaired output conforms to the schema, plus any remaining validation errors.
Example use cases
Fix broken LLM tool output mid-loop
“The LLM just returned this malformed JSON from my tool call: '{"status": "ok", "result": {"value": 42,' — repair it so my pipeline can continue without crashing.”
Schema-enforce agent response before storage
“I need you to take this JSON blob the agent produced and both fix any syntax errors AND validate it conforms to my schema for a product record before I write it to the database.”
Recover truncated API response
“The downstream service returned a truncated JSON response that cuts off mid-string — can you repair it deterministically so I get a valid, parseable object back?”
Technical details
Endpoint
POSThttps://agent.kihustle.tech/services/json-schema-repair/jobsWhen to prefer
Use this endpoint when you need deterministic, rule-based JSON repair rather than LLM-based reformatting — ideal for tight agent loops where predictability and low cost ($0.01/call) matter more than creative inference. Prefer it over prompt-based JSON fixing when you need auditability, schema enforcement, or when running at scale in automated pipelines.
Side effects
- Input JSON is too severely corrupted to deterministically repair — returns error with explanation
- Provided JSON Schema is itself invalid — returns schema parse error
- Repaired JSON fails schema validation — returns repaired JSON plus validation failure details
- Empty or null input — returns 400-level error
- Input exceeds size limits — returns size limit error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| schema | object | Optional JSON Schema |
| json_text | string | Raw JSON text to repair |
Output
Schema · Response
{
"type": "json",
"example": {
"job_id": "job_example",
"status": "completed",
"service": "json-schema-repair",
"sources": [
{
"url": "inline://json_text",
"note": "client payload"
}
],
"summary": "JSON repair succeeded; repaired=True; schema_check=True. Deterministic repair for agent loops.",
"parse_ok": true,
"repaired": true,
"next_jobs": [],
"schema_ok": true,
"issue_codes": [],
"limitations": [
"Heuristic repair only."
],
"generated_at": "2026-01-01T00:00:00+00:00",
"repair_notes": [
"repair_attempted"
],
"repaired_json": {
"ok": true
},
"schema_errors": []
}
}Tags
x402
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